h4,p,span,del{
	background-color: aquamarine;
	width: 6.25rem;
	height: 3.125rem;
	margin: auto;
	text-align: center;
	
}
input{
	width: 0.5625rem;
	height: 6px;
	text-align: center;
	margin: auto;
}
a{	display: block;/* 转换为块元素 */
	display: inline-block;/* 转换为行内块元素 */
	width: 6.25rem;
height: 3.125rem;
border:0.25rem solid green}